text: #!/usr/bin/env python
  """
  Setup.py for xraylarch
  """
  import os
  import sys
  import time
  import shutil
  import subprocess
  import importlib
  from setuptools import setup, find_packages
  try:
      from packaging.version import parse as version_parse
      HAS_PACKAGING = True
  except ImportError:
      HAS_PACKAGING = True
  
  cmdline_args = sys.argv[1:]
  INSTALL = len(cmdline_args)> 0 and (cmdline_args[0] == 'install')
  DEVELOP = len(cmdline_args)> 0 and (cmdline_args[0] == 'develop')
  
  uname = sys.platform.lower()
  if os.name == 'nt':
      uname = 'win'
  
  ## Dependencies: required and recommended modules
  install_reqs = []
  with open('requirements.txt', 'r') as f:
      for line in f.read().splitlines():
          if not line.startswith('#'):
              install_reqs.append(line)
  
  try:
      import wx
      install_reqs.extend(['wxutils>=0.2.3', 'wxmplot>=0.9.43'])
  except (ImportError, AttributeError):
      pass
  
  
  #          required,  module name, import name, min version, description
  modules = ((True, 'numpy', 'numpy', '1.18', 'basic scientific python'),
             (True, 'scipy', 'scipy', '1.5', 'basic scientific python'),
             (True, 'matplotlib', 'matplotlib', '3.0', 'basic scientific python'),
             (True, 'h5py', 'h5py', '2.8', 'basic scientific python'),
             (True, 'pillow', 'PIL', '7.0', 'basic scientific python'),
             (True, 'sqlalchemy', 'sqlalchemy', '1.0', 'basic python'),
             (True, 'pyyaml', 'yaml', '5.0', 'basic python'),
             (True, 'requests', 'requests', '0.2', 'basic python'),
             (True, 'scikit-image', 'skimage', '0.17', 'scientific python'),
             (True, 'scikit-learn', 'sklearn', '0.23', 'scientific python'),
             (True, 'lmfit', 'lmfit', '1.0.2', 'scientific python'),
             (True, 'asteval', 'asteval', '0.9.22', 'scientific python'),
             (True, 'uncertainties', 'uncertainties', '3.0', 'scientific python'),
             (True, 'xraydb', 'xraydb', '4.4.6', 'scientific python'),
             # (False, 'dioptas', 'dioptas', '0.4', 'XRD Display and Integraton'),
             (False, 'tomopy', 'tomopy', '1.4', 'Tomographic reconstructions'),
             (True, 'silx', 'silx', '0.15.2', 'Spec File reading, XRD'),
             (False, 'fabio', 'fabio', '0.10.0', 'XRD File reading'),
             (False, 'pyfai', 'pyFAI', '0.17', 'XRD intgration'),
             (False, 'pycifrw', 'CifFile', None, 'Crystallographic Information files'),
             (False, 'psycopg2', 'psycopg2', '2.8.5', 'Postgres databases'),
             (False, 'pyepics', 'epics', '3.4.0', 'Epics Channel Access'),
             (False, 'wxpython', 'wx', '4.0.4', 'Graphical User interface'),
             (False, 'wxmplot', 'wxmplot', '0.9.43', 'Graphical User interface'),
             (False, 'wxutils', 'wxutils', '0.2.3', 'Graphical User interface'),
             )
  
  missing = []
  for required, modname, impname, minver, desc in modules:
      try:
          x = importlib.import_module(impname)
          import_ok, version_ok = True, False
          ver = getattr(x, '__version__', None)
          if ver is None:
              ver = getattr(x, 'version', None)
          if ver is not None and ' ' in ver:
              ver = ver.split(' ', 1)[0]
          if callable(ver): ver = ver()
          version_ok = True
          if HAS_PACKAGING and minver is not None and ver is not None:
              version_ok = version_parse(minver) <= version_parse(ver)
      except: #  ImportError:
          import_ok, version_ok = False, True
      if not (import_ok and version_ok):
          if minver is None: minver = ''
          pref = '***' if required else ''
          missing.append(' {:3.3s} {:18.18s} {:8.8s}  {:s}'.format(pref, modname,
                                                                   minver, desc))
  
  
  ## For Travis-CI, need to write a local site config file
  ##
  if os.environ.get('TRAVIS_CI_TEST', '0') == '1':
      time.sleep(0.2)
  
  pjoin = os.path.join
  pexists = os.path.exists
  
  bindir = 'bin'
  pyexe = pjoin(bindir, 'python')
  larchbin = 'larch'
  
  if uname == 'win':
      bindir = 'Scripts'
      pyexe = 'python.exe'
      larchbin = 'larch-script.py'
  
  # list of top level scripts to add to Python's bin/
  scripts = ['larch', 'larch_server', 'feff6l', 'feff8l', 'xas_viewer',
             'gse_mapviewer', 'xrfdisplay', 'xrfdisplay_epics']
  
  larch_apps = ['{0:s} = larch.apps:run_{0:s}'.format(n) for n in scripts]
  
  packages = ['larch', 'larch.bin']
  for pname in find_packages('larch'):
      packages.append('larch.%s' % pname)
  
  
  package_data = ['icons/*', 'xray/*.dat', 'xray/*.db', 'xrd/*.db',
                  'bin/darwin64/*', 'bin/linux64/*', 'bin/win64/*',
                  'bin/win32/*']
  
  
  if INSTALL:
      # before install:  remove historical cruft, including old plugins
      cruft = {'bin': ['larch_makeicons', 'larch_gui', 'larch_client',
                       'gse_scanviewer', 'feff8l_ff2x', 'feff8l_genfmt',
                       'feff8l_pathfinder', 'feff8l_pot', 'feff8l_rdinp',
                       'feff8l_xsph']}
  
      def remove_file(base, fname):
          fullname = pjoin(base, fname)
          if pexists(fullname):
              try:
                  os.unlink(fullname)
              except:
                  pass
  
      for category, flist in cruft.items():
          if category == 'bin':
              basedir = pjoin(sys.exec_prefix, bindir)
              for fname in flist:
                  remove_file(basedir, fname)
  
      # remove all files in share/larch from earlier code layouts
      # system-wide larch directory
      larchdir = pjoin(sys.exec_prefix, 'share', 'larch')
      for dirname in ('plugins', 'dlls', 'icons'):
          fname = pjoin(larchdir, dirname)
          if os.path.exists(fname):
              try:
                  shutil.rmtree(fname)
              except PermissionError:
                  pass
  
  # now we have all the data files, so we can run setup
  setup(name = 'xraylarch',
        use_scm_version={'version_scheme': 'post-release'},
        setup_requires=['setuptools_scm'],
        # version = __version__,
        author = 'Matthew Newville and the X-rayLarch Development Team',
        author_email = 'newville@cars.uchicago.edu',
        url          = 'http://xraypy.github.io/xraylarch/',
        download_url = 'http://xraypy.github.io/xraylarch/',
        license = 'BSD',
        description = 'Synchrotron X-ray data analysis in python',
        python_requires='>=3.6',
        packages = packages,
        install_requires=install_reqs,
        package_data={'larch': package_data},
        zip_safe=False,
        entry_points = {'console_scripts' : larch_apps},
        platforms = ['Windows', 'Linux', 'Mac OS X'],
        classifiers=['Intended Audience :: Science/Research',
                     'Operating System :: OS Independent',
                     'Programming Language :: Python',
                     'License :: OSI Approved :: BSD License',
                     'Topic :: Scientific/Engineering'],
        )
  
  # create desktop icons
  if INSTALL or DEVELOP:
      py_exe = pjoin(sys.exec_prefix, sys.executable)
      larch_exe = pjoin(sys.exec_prefix, bindir, larchbin)
      if not pexists(larch_exe):
          user = os.path.expanduser('~')
  
          for base in (sys.prefix, sys.exec_prefix,
                       pjoin(user, 'anaconda3'),
                       pjoin(user, 'local'),
                       '/opt/local', '/anaconda3/', '/opt/anaconda3'):
              if pexists(pjoin(base, larchbin)):
                  larch_exe = pexists(pjoin(base, larchbin))
              elif pexists(pjoin(base, 'bin', larchbin)):
                  larch_exe = pexists(pjoin(base, larchbin))
  
      if pexists(larch_exe):
          subprocess.check_call((py_exe,  larch_exe, '-m'))
  
  if len(missing) > 0:
      dl = "#%s#" % ("="*75)
      msg = """%s
   Some Python Packages were not found.  Those marked with '***' are
   required for larch to work, while other packages listed will mean
   that some functionality will not be available:
  
       Package Name      Version    Needed for
       ----------------             ----------------------------------
  %s
       ----------------             ----------------------------------
  
   If you need these capabilities, you may be able to install them with
      pip install <Package Name>
  
  or, for anaconda python, you may use
     conda install -c conda-forge <Package Name>
  %s"""
      print(msg % (dl, '\n'.join(missing), dl))
  